how do i unlock characters

#1lolamericansPosted 4/10/2013 9:39:19 PM
i want superman batman and harley on my team D:
#2TheRisingSonPosted 4/10/2013 10:41:53 PM
Buy booster packs and hope for the best or save up to buy those specific characters. Either way you gotta grind. Or if you're the impatient type, you can use actually money to unlock them.